Table 4 Sensitivity, specificity, positive predictive value and negative predictive value using 10 % difference in cardiac output between supine position to head-up tilt to define central hypovolemia
AUC | Optimal cut-off (%) | Sensitivity (%) | Specificity (%) | Positive predictive value (%) | Negative predictive value (%) | ||
|---|---|---|---|---|---|---|---|
Stroke volume variation | |||||||
No resistor | 0.73 (0.46;1.00) | 13 | 60 | 100 | 100 | 43 | |
Expiratory resistor | 0.82 (0.58;1.00) | 28 | 70 | 100 | 100 | 50 | |
Inspiratory resistor | 0.75 (0.46;1.00) | 18 | 50 | 100 | 100 | 38 | |
Ins-/expiratory resistor | 0.58 (0.28;0.88) | 31 | 40 | 100 | 100 | 33 | |
Systolic pressure variation | |||||||
No resistor | 0.43 (0.10;0.77) | 19 | 20 | 100 | 100 | 27 | |
Expiratory resistor | 0.70 (0.37;1.00) | 33 | 70 | 67 | 88 | 40 | |
Inspiratory resistor | 0.67 (0.25;1.00) | 36 | 80 | 67 | 89 | 50 | |
Ins-/expiratory resistor | 0.96 (0.86;1.00) | 37 | 78 | 100 | 100 | 60 | |
Pulse pressure variation | |||||||
No resistor | 0.83 (0.61;1.00) | 7 | 80 | 100 | 100 | 60 | |
Expiratory resistor | 0.73 (0.40;1.00) | 4 | 70 | 67 | 88 | 40 | |
Inspiratory resistor | 0.73 (0.42;1.00) | 7 | 50 | 100 | 100 | 38 | |
Ins-expiratory resistor | 0.59 (0.25;0.93) | 12 | 67 | 67 | 86 | 40 | |
Central venous oxygen saturation | |||||||
No resistor | 0.67 (0.29;1.00) | 71 | 50 | 100 | 100 | 40 | |
Expiratory resistor | 0.46 (0.02;0.90) | 70 | 50 | 50 | 75 | 25 | |
Inspiratory resistor | 0.42 (0.00;0.88) | 77 | 50 | 50 | 75 | 25 | |
Ins-expiratory resistor | 0.50 (0.08;0.92) | 77 | 33 | 100 | 100 | 33 | |